{"id":"2697afc9-f358-4a0f-be6d-503658c18d7f","shortId":"X4sw7n","kind":"x402","title":"Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.","tagline":"Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" via the x402 payment protocol. The specific resource `/api/v1/accounts/6` is one of many endpoints offered by the platform, which spans data & analytics, AI & machine learning, finance & Web3, and infrastructure utility categories. All endpoints are priced at $0.02 per request, settled in USDC on the Base network with no API keys, rate limits, or commitments required.\n\nThe x402 challenge confirms the endpoint is live, accepting POST requests and requiring payment of up to 20,000 base units of USDC (0x8335…2913 on Base, which is 6 decimals → $0.02) per call. The payment is sent to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a 300-second timeout. The response MIME type is application/json.\n\nHowever, the specific functionality of the `/api/v1/accounts/6` endpoint is unclear. The provider's landing page lists many other endpoints (analytics, AI, finance, utilities) but does not specifically describe what the \"accounts\" resource returns. Documentation pages (/docs, /pricing, /README) all rendered only a \"Connect wallet\" prompt with no substantive content. Without further documentation or example responses, the exact data returned by this endpoint remains unknown.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","json-response","no-api-key","post-method"],"categories":["api-marketplace","crypto"],"synonyms":["premium API","pay-per-call API","x402 endpoint","USDC API","Base network API","lowpaymentfee","micropayment API","accounts API"],"warnings":["The specific functionality of /api/v1/accounts/6 is not documented anywhere in the crawled material.","All documentation pages (/docs, /pricing, /README, /api) returned only a 'Connect wallet' prompt with no substantive content.","No OpenAPI spec or response schema is available — the output of this endpoint is unknown.","The landing page lists many endpoints but /api/v1/accounts/6 is not among them, making its purpose unclear."],"endpointUrl":"https://lowpaymentfee.com/api/v1/accounts/6","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://lowpaymentfee.com/api/v1/accounts/6","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The x402 challenge is live and pricing is clear ($0.02 USDC on Base), but the specific purpose of /api/v1/accounts/6 is undocumented. All doc pages return only 'Connect wallet' with no content. No OpenAPI schema, no example requests or responses, and no description of what the accounts endpoint actually 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'/docs':181 '/pricing':182 '/readme':183 '/request':13,28 '0.02':12,27,75,125 '000':112 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':134 '0x8335':117 '20':111 '2913':118 '300':137 '6':123 'Base network API' 'USDC API' 'accept':102 'access':7,22,38 'account':176 'accounts API' 'address':133 'ai':61,166 'analyt':60,165 'api':6,21,37,87 'application/json':145 'base':9,24,83,113,120 'base-network' 'call':4,19,127 'categori':69 'challeng':96 'commit':92 'confirm':97 'connect':188 'content':194 'data':59,203 'decim':124 'describ':173 'document':179,197 'endpoint':32,52,71,99,153,164,207 'exact':202 'exampl':199 'financ':64,167 'function':149 'howev':146 'infrastructur':67 'json-response' 'key':88 'land':159 'learn':63 'limit':90 'list':161 'live':101 'lowpaymentfee' 'lowpaymentfee.com':34 'machin':62 'mani':51,162 'micropayment API' 'mime':142 'network':84 'no-api-key' 'offer':53 'one':49 'page':160,180 'pay':2,17 'pay-per-cal':1,16 'pay-per-call API' 'pay-per-request' 'payment':42,107,129 'per':3,18,76,126 'platform':56 'post':103 'post-method' 'premium':5,20,36 'premium API' 'price':73 'prompt':190 'protocol':43 'provid':35,157 'rate':89 'remain':208 'render':185 'request':77,104 'requir':93,106 'resourc':46,177 'respons':141,200 'return':178,204 'second':138 'sent':131 'settl':78 'span':58 'specif':45,148,172 'substant':193 'timeout':139 'type':143 'unclear':155 'unit':114 'unknown':209 'usdc':15,30,80,116 'usdc-settlement' 'util':68,168 'via':10,25,39 'wallet':189 'web3':65 'without':195 'x402':11,26,41,95 'x402 endpoint' 'x402-payment'","prices":[{"id":"93479fcf-e918-4f66-8b27-9b1b984c5ad8","listingId":"2697afc9-f358-4a0f-be6d-503658c18d7f","amountUsd":null,"unit":"per_call","nativeCurrency":"USD COIN","nativeAmount":"20000","chain":"base","payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","paymentMethod":"x402-usd coin","isPrimary":true,"details":{"scheme":"exact","mime_type":"application/json","accepts_all":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://lowpaymentfee.com/api/v1/accounts/6","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:39:54.061Z"}],"sources":[{"listingId":"2697afc9-f358-4a0f-be6d-503658c18d7f","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/accounts/6","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:39:54.061Z","lastSeenAt":"2026-04-23T09:00:49.989Z"}],"details":{"listingId":"2697afc9-f358-4a0f-be6d-503658c18d7f","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/accounts/6 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-token>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Endpoint returns 402 with x402 challenge requiring USDC payment on Base network","source_url":"https://lowpaymentfee.com/api/v1/accounts/6"},{"claim":"All endpoints priced at $0.02 per request with no API keys, rate limits, or commitments","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/accounts/6"},{"claim":"Payment address is 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with 300-second timeout","source_url":"https://lowpaymentfee.com/api/v1/accounts/6"}],"useCases":["Accessing premium data or account information via a single paid API call","Integrating pay-per-use API access into agent workflows without managing API keys","Programmatic access to account-level data settled in USDC on Base"],"bestFor":["Developers wanting keyless, pay-per-call API access","AI agents that can settle x402 payments in USDC on Base","Users who prefer no subscriptions or rate limits"],"notFor":["Users who need detailed documentation or guaranteed SLAs before integrating","Anyone without a Base-compatible USDC wallet","High-volume consumers who would benefit from bulk pricing"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:37.675Z"},"updatedAt":"2026-04-23T09:00:49.989Z"}}